Automatic drive for opening and closing mold boxes and metal-controlling organs in machines for casting stereoplates



Dec. 10, 1929. c. WINKLER 1,739,432

LOSING MOLD BOXES AND METAL AUTOMATIC DRIVE FOR OPENING AND CCONTROLLING ORGANS IN MACHINES FOR CASTING STEREOPLATES Filed May 10.1928 INVENI'OR 6&7] WilnAZer AT Tok'w a rs Patented Dec. 10, 1929 UNITEDSTATES PATENT, OFFICE CARL WINKLER, OF BERN, SWITZERLAND AUTOMATIC DRIVEFOR OPENING AND CLOSING MOLD v LING ORGANS IN MACHINES FOR CASTING STEREOPLATES BOXES AND METAL-CONTROL- Application filed May 10, 1928,Serial No. 276,764, and in Germany May 21, 1927.

Automatic drives for machines for casting stereo-plates already exist inwhich the shaft for closing the mold-box is driven from a continuouslyrotating part by means of spur-wheels.

According to my invention the shaft by which the mold box is opened andthe shaft by which the organ for controlling the flow of molten metalinto the mold box is opened and closed are operated by the continuouslyrotating part also through spur-wheel segments, but by means ofmechanical elements which, in the working periods of said shaft aremoved quickly by spur-wheels and spurwheel segments, and, in the timefor cooling the cast plates, are moved slowly by means of a one-toothwheel and spur-wheel segments. The advantage of this device consists inthe fact that one of two mechanical elements driven at different speedscan be constructed as a hollow shaft on the shaft for operating the moldbox, and the other mechanical element can be arranged as a hollow shafton the shaft for operating the metal controlling organ. As thecontinuously rotating part can also revolve loosely on one of theshafts, it is possible to arrange the whole drive on two shafts in avery compact manner.

In the accompanying drawing Fig. 1 shows a horizontal section throughthe entire drive, Fig. 2 a section on AB, Fig. 3 is a section on CD andFig. 4 a section on EF in Fig. 1.

The shaft a serves for operating the organ (valve) for controlling theflow of molten metal, and the shaft 6 for operatingthe mold box. On theshaft (1 is keyed the spur-wheel c and on the shaft 6 is keyed thespur-wheel segment d. The shaft a is surrounded by the hollow shafts e,f, of which e is one of the parts termed mechanical elements in theabove general description. The shaft 6 is surrounded by the hollowshaftg, the other mechanical element mentioned above. On the hollow shaft fis keyed the worm-wheel k that is driven continuously by a worm (Fig. 3)when the drive is put into operation to cast a plate. The rotation ofthe worm-wheel h is transferred by the hollow shaft 7 and spur- Wheelsegment 2' to the spur-wheel segment cl, so that the shaft 6 is turnedquickly until ment a through the angle of 3 wheel segment 9,

the spur-wheel segments z', all come out of engagement with other. Themold box is then closed. During the rotation of the shaft 6 the sh'aftais also turned at a slower speed by the spur-wheel 7c, spur-wheelsegment Z, hollow shaft 9, spurwheel segment m and spur-wheel c. Theshaft acontinuesthis rotation until all the teeth of the spur-wheelsegment Z have passed out of engagement with the spur wheel k, in whichposition the metal controlling organ actuated by the thaft a is open.'By this rotation of the hollow shaft 9 the teeth of anotherspur-wheelsegment a secured on this shaft is brought into engagement with theone-tooth wheel to fastened on the hollow-shaft f, which duringspur-wheel segteeth. In this period of slow rotation of the hollow shafteach revolution turns the 9 this shaft. is held between each turningmovement by a pawl z engaging in the disc n. During this period theshafts a, b are stationary,' because the teeth of the spurwheel segments71 and m are not in engagement with the teeth of the segment 03 andspur-wheel 0. This period of slow motion corresponds with thetimerequired to cool the plate, and the metal controlling organ remainsopen, and the mold box closed, until by the teeth of the spur-wheelsegment Z come into engagement with the spur-wheel I: and the teeth ofthe spur-wheel segment m come into engagement with the spur-wheel c,whereupon the metal controlling organ is closed.

The rotation of the hollow shaft 9, nomatter whether this shaft isturning quicker or slower is'transferred by the spur-wheels 0, p to thehollow shaft 0, so that during the slow motion of the hollow shaft 9simultaneously the spurkeyed on the hollow shaft 6, is brought intoengagement with the spurwheel segment 1, made in one piece with thespur-wheel segment cl, whereupon the mold boX is opened by the rotationof the hollowshaft e when the hollow-shaft g is being turned by thespur-wheel 7a and spur-wheel segment Z. This opening of the mold-boxtakes place comparatively slowly because the diameter of the spur-wheelk is smaller than rotation of the hollow shaft 9 the pzo hollow .shaftsurronnding vthe shaft serving that of the spur-wheel segment Z, and thefor latching the first mentioned hollow shaft spur-wheels 0, p have thesame diameter. against rotation at predetermined times.

The shaft 6, in the position in which the In testimony whereof I havesigned my mold box is closed, is locked by the discs 8, t name to thisspecification. V operating in the manner of a Geneva cross. CARLWINKLER.

Similar discs u, o and y, w are provided .to lock the shaftniinthepositions corresponding to the open and closed positions of the metalcontrolling organ.

What I claim and desire to-secureby Letr ters Patent of the UnitedStates is:

"1. An automatic drive for opening and closing the mold box "and metalcontrolling organ in machines for castingstereoplates, r 1 comprising incombination, a continuously rotating part, a shaft to operate the moldboxga shaft #to-operatethe metal controlling organ, gearing ,to turn theshaft serving .to operate the mold "box to .close said mold, a

to operate the mold box-and adapted to be turned b said continuouslyrotating part ,both quicilyzand slowly,-means enabling'said hollowshaft, when moving-quickly, to turn ":16 the shaftffor-operatingthevmetal controlling I g i i i so org-an, a second hollow ssha-ftsurrounding theshaft.fornoperatingssaidmetal controlling .organ andadapted .-to be driven by said first [hollow shaft, :and .means enablingsaid see- .10 0nd hollow shaft to turn saidshaft for operi v I I g 1 e5ating the mold toiopen said mold, substantially as, [and for thepurpose, setforth.

2. An %al1tOII1HtlC"- dIiV8 :for opening and closing the mold box and.metal controlling organ in machines for casting stereo-plates, i v

comprising :in combination, a continuously rotating part, asshaft tooperate the mold box, ashaft tOiOPBIfltB the-metal controlling organ, ahollowing shaft on 1the-mold box 40 shaft, a pair of ihollow vshafts "onthe organ a 1 operatmg shaft, :and gearing fixed to the hollow shaft andoperable at predetermined times to :rotateeither "the mold :box shaft.or the organ operating shaft.

4 '3. An automatic drive forxopening and V I I 7110 nclosingwth'e moldbox and- 'metal :controlling organ :in machines for wastingstereo-plates, comprising in combination, a continuously "rotating pant,'a shaft to operate the "mold b:ox,.'asha ft1to operate'fthemetalcontrolling organ, gearing' to fturn the shaft serving to operatethe "mold'box to close said mold, a hollow shaft surrounding the shaftserving to-op'er'ate-the mold box and adapted to be 0 turned by saidcontinuously rotating part both quickly and slowly, means enabling saidhollow shaft, when moving quickly, to turn the shaft for operating'themetalrcontrolling L50 organ, a second hollow shaft surroundingthe Y 1 5shaft 'foroperating said metal controlling organ vand adapted \to bedriven by said first hollow shaft, aandomeans enabling said secondhollow shaft to turn-said-shaft 'foroper- -n6,ating(the;mold .toopenrsaidmold,and-means a V f .130

